Journal-bearing



(No Model.)

' r 0. F. BRIGHAM.

JOURNAL BEARING.

No. 299,109. r Patented May 27, 1884.

k. PETERs. Pmwmm mr. Wishingtnh. m;

UNITED STATES PATENT OFFICE.

CHARLES F. BRIGHAM, OF WORCESTER, MASSACHUSETTS.

JOURNAL-BEARING.

SPECIFICATION forming part of Letters Patent No. 299,109, dated May 27,1884. Application filed September 11, 1883. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES F. BRIGHAM, of Worcester, in the county ofWVorcester and State of Massachusetts, have invented a new and usefulImproved Journal Bearing, of which the following is a specification.

This invention relates to journal-bearings for the axles of cars, 8m.and the object sought is to produce a journal-bearing which is composedof a combination of paper-pulp and asbestus chemically treated, ashereinafter described, and provided with a metal lining on its journalside, thus forming a journal-bearing which is capable of great wearwithout doing damage to the journal, and one that can be constructed atmuch less cost than the journal-bearings now in use.

In the accompanyingdrawings, forming part of this specification, Figure1 illustrates a perspective view of my improved journalbearing, showingthe manner in which I preferably arrange the parts; and Fig. 2representsatransverse section through the line a: m, Fig. 1..

The principal portion of my improved hear ing, which forms the body A,is made of paper-pulp and asbestus, as will be hereinafter explained.{Ihe side next to the journal is provided with a perforated sheet ofmetal (shown at B, Figs. 1 and 2) to give the requisite bearingsurface.

These bearings can be made of paper-pulp alone; but there isapossibility of its becoming heated, when it would either burst orbreak, and thus be useless. In order to remedy this evil, I usually addenough asbestus to destroy the heating propensity of the paper, so thatit will usually run cool. The paper-pulp and asbestus are chemicallytreated with the oxide and chloride of magnesium, as follows: I usuallymix equal parts (by weight) of asbestus and paper-pulp with oxide ofmagnesium, and when thoroughly incorporated temper with chloride ofmagnesium to the proper consistency for molding. The perforated metallining Bis used to give the requisite bearingsurface at the start.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

1. A journal-bearing composed of asbestus and paper-pulp treated withoxide and chloride of magnesium, in the manner and for the purposeherein specified.

2. A journal-bearing composed. of asbestus and paper-pulp treated withoxide and chloride of magnesium, as herein described, and provided witha perforated metal lining on its journal side, all as described, and forthe purpose set forth.

In testimony that I claim the foregoing improved journal-bearing, asabove described, I have hereunto set my hand this 9th day of May, 1883.

CHARLES F. BRIGHAM.

\Vitnesses:

J. K. GREENE, Enw. B; GLASGOW.

